Looking for rotational molding alternatives for Texas? Want affordable custom plastic molding that is cost effective for Bridgeport area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotomolding-Bridgeport-Rotational moulding pertains to a plastic production method that makes hollow stress-free items. The technique utilizes high temperatures and bi axial rotation to come up with seamless, one piece products that have a variety of forms, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush molding is used for certain liquid vinyl styles.

The function that makes this different from other plastic manufacturing methods in that no pressure is involved. It also has few rivals when it involves the creation of large hollow products which are long-lasting and inexpensive.There is a wide variety of products that are produced by this process including large size water tanks, automobile products, intricate molded medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the versatility in regards to design and shapes that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Bridgeport TX 76426, it is a cheaper way of making plastics. This is because apart from the fact that no pressure is required, the cost of mold preparation is low.
  • A wide array of design options.
    There is no limit to the kind of design one may want to create. The rotomolding process therefore allows for the manufacturing of products that have complex shapes for different purposes.
  • Size.
    The process provides room for the manufacturing of products of any size, large or small. As mentioned earlier, it has few competitors when it comes to the making of large tanks at low costs.
  • Low risk.
    Due to the low costs of creating a mould, the process allows for test runs before one can decide whether to do mass production. It therefore minimizes the risk of losing a lot of investment.
  • Durable products.
    The process allows for even coating of the mould with the heated polymer, giving the product a wall with uniform thickness. It also gives the option of double coating for increased durability. Sometimes metal inserts are placed inside the mould to further strengthen the product.
  • Environmentally friendly.
    There is no waste that could have a negative impact on the environment because the products that cannot be used are reground and reused as polymer.

Examples of Products Made by Rotational Molding

Custom Molding-Bridgeport-Rotocasting is a very versatile process, making it possible to create a variety of products for different industries.

  • Agricultural industry– From cattle feeders, water troughs, spray tanks etc.
  • Automotive industry– Filler tubes, dash boards, arm rests, sun visors, air conditioner duct work etc.
  • Furniture– We have plastic cabinets, chairs and tables made from this form of moulding.

There are numerous Texas plastic products also that have been made for the marine industry, lighting, waste storage and transportation, kayaks etc.

Few Disadvantages – There are nominal disadvantages that have been associated with rotocasting. For instance:

  • – The process is relatively slow when compared to injection moulding.
  • – There is a limitation when it comes to the type of raw material you can use. Only poly based and nylon polymers can be used.
  • – The process comes with an increased cost because the polymer has to be ground to powder form before use.
    These limitations are often overlooked considering that the process is still relatively cheap and offers more in terms of variety when it comes to the finished range of products.

Remember – There are new developments and discoveries that are being made as the world of plastic manufacturing in Bridgeport Texas continuously. For instance, tests are being done to see whether there are other materials that can be used for this process. But so far, rotomoulding offers a good option for the production of a wide range of inexpensive plastic products.

The Rotomolding Procedure in Detail

This molding process has been used since early times for creatingvseverl product lines. Egyptians for example, used rotational molding techniques in the producing of ceramics. The Swiss were also using this rotation format to make hollow chocolate eggs. Some plastic products in the USA were developed using this technique some time between 1940 and 1950. Since it was considered to be a fairly slow approach, the system has however taken long to become popular

1. Mold preparation.
A fixed volume of polymer in particle form is packed into a hollow mold. The mould is usually composeded of cast aluminium or sheet steel substance. The coloring needed for the final product is pre compounded into the polymer. The most often used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic production.

Preheating of the oven follows, and it can be done by either conduction, convection or sometimes radiation. It is heated up to temperatures between 500-700F. The mold with the powdered polymer is then locked and put within the oven.

2. The heating up and fusion phase.
Once placed into the oven, the mould is spun on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The rotation is done slowly and gradually, about 20 spins per minute. Something that is important at this moment is the period of time the mould will spend within the oven. If it overstays, the component will lose stability and strength, generating a faulty product. If it is taken out from the oven too early, the polymer will not have melted correctly, which develops bubbles in the completed product.

3. Mould cooling down.
When the product has sufficiently spent the right amount of time in the oven, it is then taken out for cooling. This can be done by air or water, or sometimes a mixture of both which a cool mist. When the component cools, it shrinks a little for ease of extraction from the mould. This is another step that relies a lot on the correct timing, since quick cooling decreases the material too quick, causing warping of the item.

4. The removing or de-moulding step.
Once the material inside te mold has cooled effectively, the person taking care of the operation can then remove the completed product from the mould. The process is repeated from the start, making a number of identical products.

For more information on the different rotational rotomolding options offered for the Bridgeport TX 76426 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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